Home / 13,606.32-18,776.40-7,638.24

Finding the Fourth Proportional to 13,606.32, 18,776.40 and 7,638.24

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Solution

The fourth proportional to 13,606.32, 18,776.40 and 7,638.24 is: 10,540.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.32 : 18,776.40 = 7,638.24 : x
  2. Step 2: Convert to fraction form
    13,606.32/18,776.40 = 7,638.24/x
  3. Step 3: Cross multiply
    13,606.32x = 18,776.40 × 7,638.24
  4. Step 4: Simplify right side
    13,606.32x = 143,418,649.54
  5. Step 5: Solve for x
    x = 143,418,649.54/13,606.32
  6. Step 6: Final answer
    x = 10,540.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.